I scanned for recoverable files and see it only finds specific file types. The list is long but doesn't include my files-of-interest. I'd like to know that it will find my files before I pay for the functional version. Does anyone know if the types of files recoverable is limited, or can this software find anything that is on the HDD?

If it doesn't support your particular file type, it's possible with R-Studio to create a custom file type xml file and use that. We've done it many times for customers of ours with files specific to a certain software. We'd just need 4 or 5 sample files to examine and create the custom search.